This is a list of patents for representative touch screen technologies. Each touch screen technology is well described in “A survey of mainstream & emerging touch technologies” by G. Walker.
Analog Resistive
Digital Resistive (Multi-Touch)
Surface Capacitive
- US4806709
Surface Acoustic Wave
Traditional Infrared
- US5003505
- US6504530B1
- US4916308 (Mobile)
Projected Capacitive
- Type I (Single-Touch)
- Type II (Multi-Touch)
- Type III (Dual Mode Pen and Touch)
Camera-Based Optical
Acoustic Pulse Recognition
Bending Wave (DST)
Force Sensing
Waveguide Infrared
LCD In-Cell Optical
LCD In-Cell Capacitive
- WO2005036510A1 (http://www.integritouch.com/patentfiles/InCell_PCT.pdf)
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